Waterproof Wireless Doorbell Chime Kit with Small Blue LED, Door Bell, 51 Melodies, Volume 4 Levels with 1 Transmitter

Transmitter converts the energy of the finger press, two receivers are easy to get rid of the worry about changing batteries, easier and more environmentally friendly. Easily plug receivers into an electrical outlet. The push button can be attached to the door frame with the adhesive tapes attached. Wireless range of 150m/500ft. It is ideal for large spaces that with multiple entrances or multiple floors large house, office, hotel service and other areas. Never miss a visit or delivery. waterproof, no combustible ABS850 material, 20 years operation life, working temperature of -4℉ ~ 149℉. 51 chimes, 4 volume levels, power plug, no LED indicator light.